Shoe heater



April 28, 1925. 1,535,394

w. H. BAYNARD ET AL SHOE HEATER Filed April 12. 1921 4Shets-Sheet l April 28, 1925. 1,535,394

w. H. BAYNARD ET AL SHOE HEATER Filed April 12, 1921 4 Sheets-Sheet 2 April 28, 1925.

W. H. BAYNARD ET AL SHOE HEATER Filed April 12. 1921 4 Sheets-Sheet 3 April 28, 1925.

W. H. BAYNARD ET AL SHOE HEATER Filed April 12. 1921 '4 sheets shget 4 ,32 WW $621k;

09%;: JVJqyWZ c'crf ill I Patented Apr. 28, 1925. A A UNITED STATES v 1,535,394 PATENT" OFFICE.

WILLIAM HARDCASTLE BAYNARD, OF BOSTON, FREDERICK EAGER, OF QROOKLINE, MASSACHUSETTS, ASSIGNORS TO HARRY H. BECKW'ITH, OF BROOK- LIN'E, MASSACHUSETTS.

snon EATER.

Application filed April 12, 1921. Serial N'o. 460,709.

This invention has relation to heaters foruse in the manufacture of shoes and has 7 for its object to provide certain im rovements therein as will be subsequent y ex- 1-pl'ained.

Heretofore, in the assembling. of the parts 1 of a shoe preparatory" to the pulling-over operation, it has been customary, when stifi'ened boxes are employed, for the oper-,

ator, known as the assembler, to assemble. loosely on a last the innersole and the u per, and, after daubing a flexible, previous y unstiffened box blank with shellacor other compound which sets on the volatilization of the solvent, to insert the blank between the lining and the tip or cap and stick it temporarily in place. The assembler then places the thus assembled shoe on a rack, 1

from which it is subsequently withdrawn by an operator, known as a puller, who pulls over the shoe, that is, draws the upper about the last by hand or by aid of an appropriate machine known as a pulling-over machine, and fastens the upper to the innersole at various points. This entails the removal of the shoe rack from the station where the assembler is located into proximity to the puller. When previously stiffened blanks brous blanks im-' came into use, namely 40 pregnated with a stifiening agent adapted'to besoftened by the application of heat, the procedure hereinbefore outlined could not be followed without heating the blank, so that it has now become-a part of the pullers duty,after the flat stiff blank has been assembled in the upper and secured in place b a sta ling orstitching machine, to. heat tli ebla preparatory to the pulling-over operation. This thus entails a double duty laid upon the puller and slows down his production, since a part of his time must be devoted to placing the assembled shoes on the heater and removing them therefrom, wh ch h d p p y be d o ed in the county merely to the pulling-over operation. Waste motion should'be eliminated both for the purpose of preventing fatigue, increasing the dexterity of the operator and for increasing his output. 5

This invention has for its object to provide instrumentalities by which the blanks may be heated and softened by one operator, e. g'. the-asseinbler, who assembles the upper and innersole on thelast and presents it-in a heated condition to the puller, whose sole function then is to place the assembled shoe inthe pulling-over machine and subject it For this,

to the pulling-over o eration. purpose, a rack or tab e, having provision or supporting a double line or row of op positely-facing shoes in proximity to heatmg elements, has been rovided, one of the lines of shoes being adgacent' the station of the assembler while the other is in convenient position for the puller, the rack or table being so constructed that the positions of the two rows or lines may be interchanged at will. By this means, the assembled shoes may be subjected to the heat-i ing operation, and, while so heated, may be moved into convenient position for the puler who may remove them from the rack in immediate condition for the pulling operation, the racks being successively in receiving and unloading positions. In order to facilitate the heating operation, heaters have been designed, each aving a heat conducting upper face for supporting the toe portion of the upper of an assembled shoe while the toe of the last may extend thereunder whereit is protected from the heat.

For a' more complete understanding of this invention, together with other objects and advantageous details and combinations of parts, drawings illustrating a construction embodying the invention are shown here with, in which- Figure 1 shows a rotary combined shoe rack or table andheater having a plurality of shoe-supporting elements and heating elements associated therewith.

Figure 2 is a diagrammatic view illustrating the location of the assembler and the puller, and the relation of the pulling over machine and the rotary combined shoe rack and heater.

rismatic stationary heater which may form a part of the equipment.

Figure 4 represents a plan view of the combined rack-and heater.

Figure is a transverse vertical section on the line 55 of Figure 4 through the upper vent its removal therefrom. The under side part of the same.-

Figure 6 shows for connecting the heating elements with conductors leading from the source of current. I

Fi res 7 to 10 inclusive are diagrams of the e ectrical circuits, showing how the heat generated in the heater'may be regulated and controlled through the medium of a}- suitable switch.

Referring more particularly to Figures 1,

4 and 5, 1 represents a support or standard which may be fixed to the floor, which has near its upper end a collar 2 made fast thereon by a set-screw 3. This collar is arranged.-

to support a table 4 for rotation on the support 1, a bearing plate 5 being made fast to the lower face thereof by means of screws 6 (see Figure 5) and having a flange 7 closely surrounding the support 1 and resting on the upper surface of the collar2 The upper end of the support 1 is screw-threaded for the reception of a cap 8 which bears against the upper face of the table 4 to preof table 4 is provided with aseries of oppo} sitely-extending guideways 9 in which are adjustably mounted slidable supporting members 10 which may be formed, if desired, of sections of pipe. At their outer ends, the members 10 have fixed thereto the T-fittings 11 for adjustably supporting, pipes or rods 12 extendingvertically therethrough and carrying at their upper ends T-fittings 13. As shown in Figure 4,.a pipe'or rod 14- 'is supported by a pair of fittings 13 and ex tends longitudinallyof the table on opposite sides thereof. Adjacent opposite sides of the table are a series of upstanding brackets 15 which support on their upper-surfaces a pair of heaters 16 extending inparallel relation to the. pipes 14 and spaced by the brackets 15 sufficiently above the upper surface of the table 4 to allow the toe of a last, the heel end ofwhich is supported. on one of the pipes 14, to extend thereunder; As

shown in Figures 1 and 5, these heaters are in the form of substantially triangular prisms having two faces thereof formed of a metallic plate 17, lined with a sheet of asbestos or similar material 18, ventilation openings 19 being provided through the walls thereof at intervals if desired. The third face of each heater comprises a strip of asbestos 20 and a wire' netting 21 carried on its upper surface, this netting and g the sheet 20 being made fast to the plate -17 at intervals by screws 22. As shown in Fig ure 5, a bracket 23 may be mounted within the electrical connections the heater, on which may be supported an electric heating element 24 of any suitable description. In'orde'r, however, to allow a more'flexible control. of the heat .developed in the heater, it is deemed preferable to use a pair of heati elements, as shown more .particularly in %igure 1. By reference to this figure also, it will be seen that the netting 21 furnishes a foraminous heated support of heat conducting material ofeven temperature throughout, on-which the toe portion of. an assembled shoe, with the stiifener afiixed thereto, may be held in substantially flat condition as it is received from the manufacturer during the heating operation as shown at a on Figure 1, while the toe of the last is positioned beneath the heater out of the way and substantially unaffected thereby, as shown at b.

' order to provide electricalconnections for each heater and allow the table 4 to be turned, connections as now to be described may be employed.

Referring to Figure 5, the cap 8 is cen-' trally perforated for the reception of a fiber .sleeve'40 within which is fixed a metallic sleeve 41. Within this metallic sleeve is a second fiber sleeve 42 projecting above the end .of the sleeve 41, and through the sleeve 42 is passed a metallic rod 43 which extends above the upper end ofthe fiber sleeve .42.

A .conducting slip ring 44 is rotatable on.

the end of the rod 43 and bears against the upper end of the fiber sleeve 42, and a'sim'ilar ring 45 surrounds the upper end of the sleeve 41 and bears on the upper end of the fiber sleeve 40. 'As shown in Figure 6, each ring 44 and 45 comprises a strip of metal,.

asshown at 46 and 47, which is bent around its respective conducting element, and the free end adjustably clamped in position by screws 48 and 49. Strips 46 and 47 may then be connected to opposite terminals of the.

heating elements, the turning of the table 4 v j causing the strips 46 and 47 to turn relative to their telescopically arranged conductors 43 and 41, while retaining electrical continuitytherewith. The lower ends of the rods 43 .and the sleeve 41 are connected to a pair of In Figures 7 to 10 are shown wiring dia grams illustrating the difierent connectio s which may be made by manipulation of the alon switch 57 'for various degrees of heat required; in Figure 7, the heating elements heating element only in circuit for a medium heat; Figure 9 showing the two elements in series for a lower heat; and Figure 10 showing the switch open for no heat. At 61 may be provided a lamp in a shunt circuit which serves as a visible indication of the particular degree of heat for which the switch is positioned by means of the intensity of its light. Detailed description of the switch, whereby these connections are made, is deemed unnecessary, as such switches are well known in the art.

Referring now to Figure 2,at A is indicated the station for the shoe-assembler in a shoe factory, the rack or table above described being indicated at B. At C is shown the station for the puller and at D is shown the position of the pulling-over machine. By inspection of this figure, it is evident that the assembler may take the lasts and shoe uppers from the rack, assemble them, together with the stifl'eners, and place them one side of the table or rack as shown in Figure 2, where the toe stifieners may be subjected to heat from the heaters as above described. One side of the table havin been filled with the thus assembled shoes, the table may then be rotated about its support to present the shoes in convenient position for the puller at C, who may take these shoes, while they are still subject to the action of the heaters, and place them in the pulling-over machine D to perform the pulling-over operation. It should be noted that the assembler holds the shoe by the heel portion as he places it on the heater, this being the natural position for holding during the insertion of the toe stifl'ener, and that the shoe is presented to the puller in position to be removed by graspingthe heel portion in convenient 'osition for immediate insertion in the pul ing-over machine. The handling of the shoe is thus rendered natural and easy and useless or lost motions eliminated. At E is shown a stationary heating member on which the assembler may place the stifl'eners for a reliminary heating before assembling them in. the shoes if desired, the arrangement of this heating member be' shown in Figure 3. Referring to this figure, a pair of bracket arms 7 0 support at their upper ends a triangular heater 71, which may, if desired, be constructed in the same manner as the triangular members 16 above described, the supports having inwardly-turned 11 per ortions to engage beneath the exten ed e ges of that face of the heater comprising the wire netting 21.

Having thus described an embodiment of this invention, it will be evident to those shoes with their toe skilled in the art that many changes and modifications might be made therein without departing from its spirit and scope as defined by the appended claims.

We claim 1. In combination, a shoe holder, a heater carried by said holder, and means for facilitating the movement of said holder while the shoe is being heated thereon to present the shoe at any of a plurality of positions.

2. In combination, a shoe holder rotatable about an axis, and a shoe heater carried by said holder eccentric to said axis.

3. A device of the class described comprising a table mounted to turn about a vertical axis, a plurality of shoe supports mounted on said table, and a heater carried adjacent each shoe support.

4. A device of the class described comprising a table mounted to turn on a vertical axis, a series of heaters supported adjacent the edge of said table, and frames extending from said table for supporting assembled portions extending adjacent said heaters. I

5. A device of the class described comprising, in combination, .a vertical support, a table mounted to turn on said support, a series of electric heaterscarried by said g table. a series of members for supporting shoes in position to be heated by said heaters, and electrical connections to said heaters extending through said support and constructed and arranged to maintain electri cal continuity with said heaters while permitting the turning of said table.

6. A device of the class described, in combination, a movable shoe holder, electrical means to heat a shoe thereon, and means for insuring a supply of electric current to said heating means while said holder is being moved.

7. A device of the class described comprising, in combination, a movable table, a series of heaters placed on said table, and a series of shoe supports carried by said table each positioned to support an assembled shoe with the toe of the last extending under a heater and the shoe upper resting thereon.

8. A heating device comprising a support, a frame s acedabove said sup ort to receive the toe ofa last of an assemb ed shoe therebetween, and a heater carried by said frame and on which the toe portion of the shoe upper may rest. a

9. A heating device com rising a support, a frame spaced above sai support, and a substantially triangular prismatic heater carried by said support in position to sup- .port the toe portion of an assembled shoe ducting elements carried by said su port and projecting to difierent distances t erefrom, an electric heater carried by said table, and slip rings engaging said conducting. elements and connected to the. terminals of said heater.

11. A device of the class described comprising, in combination, a plurality of shoe supports, means to heat-shoes on said sup.- ports, and means whereby said supports may be moved in succession into position for shoes to be placed thereon.

12. A device of the class described comprising, in combination, a plurality of shoe supports, means to heat shoes on said supports, and a carrier for said suppogts movable to permit shoes to be placed'on successively presented supports at one position and removed therefrom atanother position.'

13. A shoe heater, comprising, in combination, .a standard, a support rotatably carried by said standard, an electrical heating appliance on said support, stationary conductors carried by said standard, and slip rin connections from saidaconductors to sai appliance.

14. A heater for the toe of an assembled shoe comprising a receptacle having a top face for supporting the'toe portion of the shoe upper, a lower face sloping downwardly and rearwardly. from said face and beneath which the toe of the last may extend, and a heating element within said receptacle.

15. In a device for heating shoes a heater comprising a prismatic casing and a heating element carried within said casing.

16. In a device for heating shoes a heater comprising a prismatic casing, and a heating element extendipg longitudinally within said casing.

- 17. In a device for heating shoes a heater comprising a prismatic casing, a support for articles to be heated mounted onone face of means for connectcasing, a wire netting'over one face of said casing to furnish asupport for a shoe to be heated, and a heating element within said casing. J

20. A device for heating shoes comprising a casing having a flat. top com rising a foraminous heat conducting mexn he r for supporting a shoeto be heated, and a heating element within said casing. I

21. In a device for heating shoes a heater 2 comprising a heating member constructed and arranged to heat the toe portion of the upper of an assembled shoe while permitting {)he last to be substantially unafiected there- 22. A device of the class described comprising a support, a shoe holder on which a shoe may be placed inone position relative to a shoe operator at one station, and movable on said support to present the shoe for removal in the same relative position to another shoe operator at a different station. '23. A'device of the class described comprising, in combination, a heater, means for supporting an assembled shoe in proximity to said heater' to expose the box toe blank in substantially flat condition a the heater,

andjmeans whereb said meansand heater may be moved bodily together.

In testimony whereof we have aflixed our signatures. v WILLIAM HARDCASTHZI BAYNARD. FREDERICK WILLIAM EAGER. 

